Hmm, I need logging from when the corruption happened. If this is reproducible, can you enable that logging on a clean osd (or better, a clean cluster) until the assert occurs? -Sam On Mon, Apr 29, 2013 at 2:45 PM, Travis Rhoden <trhoden@xxxxxxxxx> wrote: > Also, I can note that it does not take a full cluster restart to trigger > this. If I just restart an OSD that was up/in previously, the same error > can happen (though not every time). So restarting OSD's for me is a bit > like Russian roullette. =) Even though restarting an OSD may not also > result in the error, it seems that once it happens that OSD is gone for > good. No amount of restart has brought any of the dead ones back. > > I'd really like to get to the bottom of it. Let me know if I can do > anything to help. > > I may also have to try completely wiping/rebuilding to see if I can make > this thing usable. > > > On Mon, Apr 29, 2013 at 2:38 PM, Travis Rhoden <trhoden@xxxxxxxxx> wrote: >> >> Hi Sam, >> >> Thanks for being willing to take a look. >> >> I applied the debug settings on one host that 3 out of 3 OSDs with this >> problem. Then tried to start them up. Here are the resulting logs: >> >> https://dl.dropboxusercontent.com/u/23122069/cephlogs.tgz >> >> - Travis >> >> >> On Mon, Apr 29, 2013 at 1:04 PM, Samuel Just <sam.just@xxxxxxxxxxx> wrote: >>> >>> You appear to be missing pg metadata for some reason. If you can >>> reproduce it with >>> debug osd = 20 >>> debug filestore = 20 >>> debug ms = 1 >>> on all of the OSDs, I should be able to track it down. >>> >>> I created a bug: #4855. >>> >>> Thanks! >>> -Sam >>> >>> On Mon, Apr 29, 2013 at 9:52 AM, Travis Rhoden <trhoden@xxxxxxxxx> wrote: >>> > Thanks Greg. >>> > >>> > I quit playing with it because every time I restarted the cluster >>> > (service >>> > ceph -a restart), I lost more OSDs.. First time it was 1, 2nd 10, 3rd >>> > time >>> > 13... All 13 down OSDs all show the same stacktrace. >>> > >>> > - Travis >>> > >>> > >>> > On Mon, Apr 29, 2013 at 11:56 AM, Gregory Farnum <greg@xxxxxxxxxxx> >>> > wrote: >>> >> >>> >> This sounds vaguely familiar to me, and I see >>> >> http://tracker.ceph.com/issues/4052, which is marked as "Can't >>> >> reproduce" — I think maybe this is fixed in "next" and "master", but >>> >> I'm not sure. For more than that I'd have to defer to Sage or Sam. >>> >> -Greg >>> >> Software Engineer #42 @ http://inktank.com | http://ceph.com >>> >> >>> >> >>> >> On Sat, Apr 27, 2013 at 6:43 PM, Travis Rhoden <trhoden@xxxxxxxxx> >>> >> wrote: >>> >> > Hey folks, >>> >> > >>> >> > I'm helping put together a new test/experimental cluster, and hit >>> >> > this >>> >> > today >>> >> > when bringing the cluster up for the first time (using mkcephfs). >>> >> > >>> >> > After doing the normal "service ceph -a start", I noticed one OSD >>> >> > was >>> >> > down, >>> >> > and a lot of PGs were stuck creating. I tried restarting the down >>> >> > OSD, >>> >> > but >>> >> > it would come up. It always had this error: >>> >> > >>> >> > -1> 2013-04-27 18:11:56.179804 b6fcd000 2 osd.1 0 boot >>> >> > 0> 2013-04-27 18:11:56.402161 b6fcd000 -1 osd/PG.cc: In >>> >> > function >>> >> > 'static epoch_t PG::peek_map_epoch(ObjectStore*, coll_t, hobject_t&, >>> >> > ceph::bufferlist*)' thread b6fcd000 time 2013-04-27 18:11:56.399089 >>> >> > osd/PG.cc: 2556: FAILED assert(values.size() == 1) >>> >> > >>> >> > ceph version 0.60-401-g17a3859 >>> >> > (17a38593d60f5f29b9b66c13c0aaa759762c6d04) >>> >> > 1: (PG::peek_map_epoch(ObjectStore*, coll_t, hobject_t&, >>> >> > ceph::buffer::list*)+0x1ad) [0x2c3c0a] >>> >> > 2: (OSD::load_pgs()+0x357) [0x28cba0] >>> >> > 3: (OSD::init()+0x741) [0x290a16] >>> >> > 4: (main()+0x1427) [0x2155c0] >>> >> > 5: (__libc_start_main()+0x99) [0xb69bcf42] >>> >> > NOTE: a copy of the executable, or `objdump -rdS <executable>` is >>> >> > needed to >>> >> > interpret this. >>> >> > >>> >> > >>> >> > I then did a full cluster restart, and now I have ten OSDs down -- >>> >> > each >>> >> > showing the same exception/failed assert. >>> >> > >>> >> > Anybody seen this? >>> >> > >>> >> > I know I'm running a weird version -- it's compiled from source, and >>> >> > was >>> >> > provided to me. The OSDs are all on ARM, and the mon is x86_64. >>> >> > Just >>> >> > looking to see if anyone has seen this particular stack trace of >>> >> > load_pgs()/peek_map_epoch() before.... >>> >> > >>> >> > - Travis >>> >> > >>> >> > _______________________________________________ >>> >> > ceph-users mailing list >>> >> > ceph-users@xxxxxxxxxxxxxx >>> >> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >>> >> > >>> > >>> > >> >> > _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
 |